v3.24.1
Income Tax - Summary of Unused Investment Credits (Detail) - 12 months ended Dec. 31, 2023
$ in Thousands, $ in Thousands
TWD ($)
USD ($)
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Remaining Creditable Amount $ 2,314,341 $ 75,583
Unused tax credits [member]    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Remaining Creditable Amount $ 398,057 13,000
Purchase of machinery and equipment [member]    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Expiry Year 2028 and thereafter  
Purchase of machinery and equipment [member] | Unused tax credits [member]    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Remaining Creditable Amount $ 306,005 9,994
Others [member]    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Expiry Year 2026 and thereafter  
Others [member] | Unused tax credits [member]    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Remaining Creditable Amount $ 92,052 $ 3,006